Isshuu Mawatte Heroine desu! Jishou Akuyaku Reijou no Dekiai Keikaku ni Kyouryoku Shite, Risou no Danna-sama wo Teni Iremasu

Born into an impoverished baronial family, Lucia has long survived with the steadfast support of Rosalinde, a flamboyant peer who fancies herself a "villainess." Thanks to Rosalinde's backing, Lucia manages to enroll in an elite academy reserved for the wealthy elite. However, her hopes for a peaceful education are immediately dashed when she becomes entangled in Rosalinde's wildly convoluted romantic delusions. Despite an obvious mutual affection between Rosalinde and the Crown Prince, the eccentric self-proclaimed villainess insists on dragging Lucia into her theatrical schemes, demanding that Lucia act as a romantic rival and scapegoat to fulfill her grand vision. Compounding the chaos, the infatuated Crown Prince readily plays along, forcing Lucia to facilitate their dramatic romance against her will. Exhausted by this absurd farce, Lucia simply longs to find a wonderful husband and escape the madness. Set within the prestigious halls of the academy, this romantic comedy follows a weary young lady as she navigates the eccentricities of her peers, ultimately striving to secure her own ideal future amidst a web of elaborate schemes.